Chewing Wood

I don't know the precise name of this wasp, but I do know it's a 'social' wasp, rather than a solitary one, as the social wasps gather gather wood fibre from weathered wood to create the pulp for their nests. This image was taken in my Mum's garden in Zurich, but my Flickr friend Linda Peall (Rivercrouchwalker) has recently taken a practically identical one in this country.

Done